K1 is not off topic, I am very interested and will build one soon.
73, Bill K9YEQ K2 #35; KX1 #35; K3 #1744; mini mods ATS-3B -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike Morrow Sent: Friday, December 25, 2009 4:14 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K1 deaf after KNB1 installation Byron wrote: >My K1, #2799, build was going along swimmingly until I built >and installed the KNB1 module...now my poor K1 is deaf Hi Byron, First, it would likely be best to mark a posting such as yours with an "OT" for being clearly "off-topic" on this "All K3, Only K3, All The Time" list! :-) Seriously, though, I'll assume that you had to install the RF board J1 connector as part of your KNB1 installation process. In other words, the J1 connector was not in place earlier when your K1 was working. If that assumption is correct, then I'd look very very closely at the K1's RF PCB soldered connections to the J1 connector. Especially, check for no solder bridges to ground (pins 5, 6, and 7) from signal pins 3, 4, or 8. My money says that during J1 installation, either pin 4 or pin 8 got shorted to ground with a solder bridge. Check pins 3, 4, and 8 with an ohm-meter to ground (pin 5, 6, or 7). If you get a very low resistance, then that's your problem. And since this is at the RF board connector J1, the same symptoms would show regardless of the KNB1 being in place. Good luck. Mike / KK5F ______________________________________________________________ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
